package com.sky.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.sky.annotation.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.entity.Employee;
import com.sky.enumeration.OperationType;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CateMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.service.CategoryService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.time.LocalDateTime;
import java.util.List;

/**
 * 分类业务层
 */
@Service
@Slf4j
public class CategoryServiceImpl extends ServiceImpl<CateMapper, Category> implements CategoryService {

    @Autowired
    private CateMapper cateMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 新增分类
     *
     * @param category
     */
    public void add(Category category) {
        // 分类状态默认为禁用状态0
        category.setStatus(StatusConstant.DISABLE);

        // 设置创建时间、修改时间、创建人、修改人
        // category.setCreateTime(LocalDateTime.now());
        // category.setUpdateTime(LocalDateTime.now());
        // category.setCreateUser(BaseContext.getCurrentId());
        // category.setUpdateUser(BaseContext.getCurrentId());

        cateMapper.insert(category);
    }

    /**
     * 分页查询
     *
     * @param categoryPageQueryDTO
     * @return
     */
    public Page<Category> pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        QueryWrapper<Category> queryWrapper = new QueryWrapper<>();

        // 根据名称查
        if (StringUtils.hasText(categoryPageQueryDTO.getName())) {
            queryWrapper.like("name", "%" + categoryPageQueryDTO.getName() + "%");
        }

        // 根据类型查
        if (categoryPageQueryDTO.getType() != null && categoryPageQueryDTO.getType() > 0) {
            queryWrapper.eq("type", categoryPageQueryDTO.getType());
        }

        int num = categoryPageQueryDTO.getPage(); // 当前页
        int size = categoryPageQueryDTO.getPageSize(); // 每页数量

        Page<Category> page = new Page<>(num, size);
        cateMapper.selectPage(page, queryWrapper);

        return page;
    }

    /**
     * 根据id删除分类
     *
     * @param id
     */
    public void deleteById(Long id) {
        // 查询当前分类是否关联了菜品，如果关联了就抛出业务异常
        Integer count = dishMapper.countByCategoryId(id);
        if (count > 0) {
            // 当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        // 查询当前分类是否关联了套餐，如果关联了就抛出业务异常
        count = setmealMapper.countByCategoryId(id);
        if (count > 0) {
            // 当前分类下有菜品，不能删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        // 删除分类数据
        cateMapper.deleteById(id);
    }

    /**
     * 修改分类
     *
     * @param category
     */
    public void update(Category category) {
        // 设置修改时间、修改人
        // category.setUpdateTime(LocalDateTime.now());
        // category.setUpdateUser(BaseContext.getCurrentId());
        cateMapper.updateById(category);
    }

    /**
     * 启用、禁用分类
     *
     * @param status
     * @param id
     */
    public void startOrStop(Integer status, Long id) {
        Category category = Category.builder()
                .id(id)
                .status(status)
                .build();

        cateMapper.updateById(category);
    }

    /**
     * 根据类型查询分类
     *
     * @param type
     * @return
     */
    public List<Category> list(Integer type) {
        return cateMapper.list(type);
    }
}
